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151.
The past two decades have produced extensive evidence on the manifold and severe outcomes for victims of aggression exposure in the workplace. However, due to the dominating individual-centered approach, most findings miss a social network perspective. Consequently, knowledge of negative spillover to different life-domains or crossover to uninvolved individuals alongside a detailed understanding of the involved transmission processes remains scarce. By integrating social aggression theorizing, the present study investigated transmission routes (emphatic, behavioral) of experienced adversities and aggression at work toward perpetration of aggressive behavior and potential spillover and crossover effects into the private life domain in a diary study of 72 mixed dyads. Analyses of mediation based upon the Actor-Partner Interdependence Model revealed an association between the frequency of perpetrating aggressive behavior in the work context and a spillover into the private life domain via aggression-promoting internal states (emotions, cognitions, arousal). Based on the different patterns of mediation, it appears that adversities follow a mental transmission process, whereby experienced aggression displayed behavioral assimilation. In contrast, no crossover effects of exposure to adversities or aggression at work to a study partner at home could be detected. Practical and theoretical implications as well as limitations and ideas for future work are discussed. 相似文献
152.
Drosophila Mushroom Bodies Are Dispensable for Visual, Tactile, and Motor Learning 总被引:3,自引:0,他引:3
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Reinhard Wolf Tobias Wittig Li Liu Gerold Wustmann Dirk Eyding Martin Heisenberg 《Learning & memory (Cold Spring Harbor, N.Y.)》1998,5(1):166-178
A total of 18 associative learning/memory tests have been applied to Drosophila melanogaster flies lacking mushroom bodies. Only in paradigms involving chemosensory cues as conditioned stimuli have flies been found to be compromised by a block in the mushroom body pathway. Among the learning tasks not requiring these structures are a case of motor learning (yaw torque/heat), a test of the fly’s spatial orientation in total darkness, conditioned courtship suppression by mated females, and nine different examples of visual learning. The latter used the reinforcers of heat, visual oscillations, mechanical shaking, or sucrose, and as conditioned stimuli, color, intensity contrast, as well as stationary and moving visual patterns. No forms of consolidated memory have been tested in mushroom body-less flies. With respect to short-term memory the mushroom bodies of Drosophila are specially required for chemosensory learning tasks, but not for associative learning and memory in general. 相似文献
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155.
We present a predictive account on adaptive sequential sampling of stimulus-response relations in psychophysical experiments. Our discussion applies to experimental situations with ordinal stimuli when there is only weak structural knowledge available such that parametric modeling is no option. By introducing a certain form of partial exchangeability, we successively develop a hierarchical Bayesian model based on a mixture of Pólya urn processes. Suitable utility measures permit us to optimize the overall experimental sampling process. We provide several measures that are either based on simple count statistics or more elaborate information theoretic quantities. The actual computation of information theoretic utilities often turns out to be infeasible. This is not the case with our sampling method, which relies on an efficient algorithm to compute exact solutions of our posterior predictions and utility measures. Finally, we demonstrate the advantages of our framework on a hypothetical sampling problem. 相似文献
156.
Empathetic arousal has been found to be a strong predictor of helping behavior. However, research has neglected the motivational mechanisms whereby empathetic concern elicits help giving. Three studies examined the extent to which autonomous and controlled motives for helping mediated the relationship between empathy and helping. Study 1 found that state empathy predicted willingness to offer time and money to help a person in need, with this relationship mediated by autonomous motivation for helping. Study 2 demonstrated that dispositional, empathetic concern predicted prosocial intentions and behavior via the mediation of autonomous motivation. Study 3 revealed that participants who focused on the emotions of another person in distress reported greater willingness to help than did participants who remained emotionally detached, with this effect mediated by autonomous motivation to help. Controlled motivation had no positive effects on helping in any of the studies. The results suggest that empathy encourages prosocial behavior by increasing autonomous motivation to help. 相似文献
157.
Recent theorizing on the relation between victim sensitivity and unethical behavior predicts that victim sensitivity is related to an asymmetrical focus on cues associated with untrustworthiness compared to cues associated with trustworthiness. This hypothesis and its consequences for the accuracy of social predictions are investigated in this article. In Study 1, participants rated the trustworthiness of 35 computer-animated faces that differed in their emotional expression. People high in victim sensitivity rated neutral and hostile faces more untrustworthy than people low in victim sensitivity, whereas no such effect was found for friendly faces. In Study 2, participants predicted the cooperativeness of 56 targets on the basis of minimal information. The accuracy of predictions was negatively related to victim sensitivity, and people high in victim sensitivity systematically underestimated targets' cooperativeness. Thus, the asymmetrical focus on untrustworthiness cues among victim-sensitive individuals seems to impair rather than improve their social judgments. 相似文献
158.
Petersen A Andersen TS 《Journal of experimental psychology. Human perception and performance》2012,38(2):498-514
The psychometric function of single-letter identification is typically described as a function of stimulus intensity. However, the effect of stimulus exposure duration on letter identification remains poorly described. This is surprising because the effect of exposure duration has played a central role in modeling performance in whole and partial report (Shibuya & Bundesen, 1988). Therefore, we experimentally investigated visual letter identification as a function of exposure duration. We compared the exponential, the gamma, and the Weibull psychometric functions, all with a temporal offset included, as well as the ex-Gaussian, the log-logistic, and finally the squared-logistic, which is a psychometric function that to our knowledge has not been described before. The log-logistic and the squared-logistic psychometric function fit well to experimental data. Also, we conducted an experiment to test the ability of the psychometric functions to fit single-letter identification data, at different stimulus contrast levels; also here the same psychometric functions prevailed. Finally, after insertion into Bundesen's Theory of Visual Attention (Bundesen, 1990), the same psychometric functions enable closer fits to data from a previous whole and partial report experiment. 相似文献
159.
Tobias Henschen 《Human Studies》2012,35(1):95-113
This paper tries to read some structure into the perplexing diversity of the literature on Heidegger’s concept of authenticity.
It argues that many of the interpretations available rely on views that are false and cannot be Heidegger’s. It also shows
that the only correct interpretation of Heidegger’s concept of authenticity emerges from a synthesis of Dreyfus’ later interpretation
and Haugeland’s interpretation of this concept. A synthesis of these interpretations yields an interpretation, according to
which Dasein’s being is authentic only if it is capable of using tools or language in radically new ways. 相似文献
160.
Hein T Schmeltzpfenning T Krauss I Maiwald C Horstmann T Grau S 《Human movement science》2012,31(3):683-694
Several studies have used variability of continuous relative phase (CRP) to investigate overuse injuries, since low variability is thought to be related to running injuries. This study investigates whether the analysis of CRP variability leads to additional information about possible differences or similarities between healthy and injured runners. Further, a decision about future applications of CRP variability should be based on the ability to implement and interpret data. 18 healthy female runners (CO) and 18 female runners who suffered from iliotibial band syndrome (ITBS) were evaluated by calculating CRP variability for 4 coupling pairs. Besides analyzing continuous variability of CRP, we also averaged it for the whole stance phase and for four predefined stance phase intervals. Confidence intervals were displayed and independent t-tests for comparing the two groups were conducted. During initial and terminal stance phase as well as after heel-off an increase in CRP variability was detected for both groups of runners. In contrast, the foot flat period was characterized by stable joint coordination and a decrease in variability. This paper presents possible interpretations of CRP variability but no statistically significant differences in CRP variability were found between the two groups of runners. Despite the missing statistical significance, a relationship between high CRP variability and injury seems to be conceivable, since the injured runners demonstrated an increased variability for all couplings in the first half of the stance phase. Further application of CRP variability in biomechanical research is essential to determine whether a relationship exists between injury and coordination variability. 相似文献